$du -sk * | sort -n
4	index.php
4	myicon.png
4	programming
4	python
4	README.md
4	wp-blog-header.php
4	wp-comments-post.php
4	wp-config-sample.php
4	wp-cron.php
4	wp-links-opml.php
4	wp-load.php
4	xmlrpc.php
8	english
8	readme.html
8	testing
8	wp-activate.php
8	wp-mail.php
8	wp-trackback.php
12	commandline
12	github
12	ui
16	webex
16	wp-settings.php
20	knowledge
20	license.txt
20	real
20	shell
24	design
28	wordpress
32	free
32	wp-signup.php
36	wp-login.php
40	book
48	guide
60	reverse
60	web
128	apache
168	hacks
192	openend
236	reader
292	sorting
312	lib
360	plan
408	languages
584	docs
3064	sourceinstall2
3544	code
7804	files
8168	wp-admin
15300	trueangle
17820	wp-includes
198896	wp-content
$